D-Ribose Powder (100% Pure) 200 g by Jarrow FormulasRibose is one of the necessary building blocks for the formation of ATP, the "universal" energy molecule in the body. Physical stress can deplete ATP stores in cardiac and skeletal muscles. As the rate limiting substrate in the synthesis of nucleotides, including ATP, ribose plays a vital role in replenishing ATP, thus, enhancing energy production, improving muscle recovery, and thus Muscle Edge. Pure D Ribose Powder May Improve Cellular Energy Levels